KSB BOAX- B, Operating Instructions Manual

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7.4 Recommendations for installation
Before assembly
- Verify that pipeline flanges are free from metallic chips and
weld splatter.
- Verify that pipeline flanges are located on the same centreline
and are parallel.
- Verify that inside diameter of pipeline flange is in accordance with
the minimum and maximum diameters given by the manufacturer.
- Verify that nothing hinders the complete moving of the disc during
opening or closing, in particular at the internal weld seams or at
the pipe ends.
- Pull apart the pipeline flanges to allow valve insertion without
damaging the elastomer liner of the valve.
During assembly
- Place the disc as spaced apart as possible from the closing
position, but without that disc protrudes past the v
alve’s
body.
- Spread the two pipe flanges to obtain sufficient clearance
between flange face and valve seat cheeks.
7.5 Actuated valves
Electrical cables may only be connected by qualified
personnel.
The applicable electrical regulations (e.g. IEC and national
standards), also for equipment in hazardous locations, must be
observed.All electrical equipment such as actuator, switchboard,
magnetic valve drive, limit switch etc. must be installed in
floodproof dry locations.Voltage and frequency must match the
valves stated on the identity plate.
8 Commissioning/Decommissioning
8.1 Commissioning
8.1.1 General
Prior to commissioning the valve, the pressure, temperature and
material data stated on the valve should be compared to the actual
operating conditions in the piping system to check whether the
valve can withstand the loads occurring in the system.
Minimum clearance : E + 40mm
E : Face to face valve
(refer to the type series booklet) E
- Insert valve between pipeflanges and center using several tie -
rods.
- Screw up progressively the nuts until metal to metal contact is
achieved between the valve body and pipeline flanges, by making
sure the good centering of the body compared with the flange is
maintained.
- Operate the valve several times to ensure no valve disc
obstruction.
Possible pressure surges (water hammer) must not be
exceed the highest admissible pressure. Adequate precautions
should be taken.In new pipe systems and especially after repair
work, the system should be flushed with the valves fully open to
remove solids,
e.g. weld beads, which may damage the seats.
8.1.2 Operation
The position of the disc is indicated by the pointer of the actuator or
by handle lever. The valves are closed by turning in the clockwise
direction (top view) and opened in the counterclockwise direction.
8.1.3 Functional Check
The following functions should be checked:Before commissioning,
the shut-off-function of the valves should be checked by repeated
opening and closing.
8.1.4 Actuated valves
Adjustable end stops and torque limiter are pre - adjusted in factory.
The customer may have to complete the adjustment on site during
the commissioning, if necessary.
8.2 Decommissioning
During extended shutdown periods, liquids liable to change their
condition due to polymerization, crystallization, solidification etc.
must be drained from the piping system. If necessary, the piping
system should be flushed with the valves fully open.
9. Maintenance/Repair
9.1 Safety Instructions
DN

200 : no maintenance
Maintenance and repair work may only be carried out by skilled
and qualified personnel.
For all maintenance and repair work, the safety instructions listed
below and also the general notes in section 2 must be
observed.Always use suitable spare parts and tools, even in case
of emergency, otherwise correct operation of the valves cannot be
assured.
E + 40
mini